An urban laboratory.

A smoke stack so large, the Washington Monument could fit inside!

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

Daily jousts and dancing barrel makers in Munich's mechanical clock.

A reproduction of earth's many biomes.

England's oldest surviving hedge maze has been confusing visitors for over 300 years.

An historic and oft-filmed spot for musclebound iron pumpers on the Pacific coast.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

A Circus legend leaves an unexpected endowment.

Equal parts record-breaking temple to consumerism and bizarre fun park, it's more than you think it is...

One woman's UFO-themed campground, complete with self-built energy vortexes, UFO-themed weddings, and magic bushes.

Soaring over the Niagara Whirlpool since 1916.

A beautiful opera house in the heart of Amazonia has recently restarted performances after a 90-year hiatus.

Standing in a state of "arrested decay," this ghost town allows for a detailed peek into Gold Rush life in an unusually harsh climate.

The only road through the heart of Glacier National Park.

A sculpture made of 10 Cadillacs as a monument to the "Golden Age" of the American automobile.

A surviving remnant of the thick ice mass that once mantled most of Western Canada's mountains.

One of the Seven Wonders of the Modern World holds the world's tallest metal staircase.

This one has sailed five times as far as Sir Francis Drake's famous ship.

Fossils, railroads, and waterfalls!

Few other hotels can rival the grandeur of the Castle in the Rockies.

Ship-sized kinetic sculptural fantasy.

See massive fossils that are over 200 million years old in northeastern Arizona.

Named in tribute to Canadian singer and songwriter Neil Young.